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Rifles, Reloading, Optics, Equipment
Reloading
Head spacing or sprung bolt???
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<blockquote data-quote="J E Custom" data-source="post: 535362" data-attributes="member: 2736"><p>That sounds like case head separation and there are generally 2 main causes.</p><p></p><p>One is excessive head space. on belted cases head space should be .001 to .0015 Max</p><p></p><p>If yours is 1 1/2 thousandths or less you are OK.</p><p></p><p>The other thing that will do this is Over sizing (Much smaller than the chamber) this works the brass</p><p>and leads to failure.</p><p></p><p>To check this measure a sized case from the base to the neck shoulder junction, then do the same</p><p>with a fired case. if it is much more than 3 or 4 Thousandths longer then you are over sizing</p><p>and need to back of on your dies to the point that you feel just a slight resistance when closing </p><p>the bolt.</p><p></p><p>I Hope this helps to prevent a case head separation.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 535362, member: 2736"] That sounds like case head separation and there are generally 2 main causes. One is excessive head space. on belted cases head space should be .001 to .0015 Max If yours is 1 1/2 thousandths or less you are OK. The other thing that will do this is Over sizing (Much smaller than the chamber) this works the brass and leads to failure. To check this measure a sized case from the base to the neck shoulder junction, then do the same with a fired case. if it is much more than 3 or 4 Thousandths longer then you are over sizing and need to back of on your dies to the point that you feel just a slight resistance when closing the bolt. I Hope this helps to prevent a case head separation. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Head spacing or sprung bolt???
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